Electric switch and signal apparatus



(No Model.)

J. G. SCHREUDER.

ELEGTRIU SWITCH AND SIGNAL APPARATUS.

Patented Aug. 25, 1896 f/iineaJej.

OMW AA a RPYS PETERS co PHOYO-LH' hyrrnn TATES Aren't Orricn,

JENS G. SOHREUDER, OF XVILKINSBUR-G, PENNSYLVANIA, ASSIGN OR TO THEUNION SWITCH AND SIGNAL COMPANY, OF SVVISSVALE, PENNSYLVANIA.

ELECTRIC SWITCH AND SIGNAL APPARATUS.

SPECIFICATION forming part of Letters Patent No. 566, 541, dated August25, 1896.

Application filed March 31, 1893i Serial No. 46 8,560. (No model.)

To aZZ whom it may concern: verter being properly proportioned relativeBe it known that I, J ENS G. SCHREUDER, a to the current generated andto each other to subject of the King of Sweden and Norway, transmit therequired current to the lamps. residing at WVilkinsburg, in the countyof Al- One pole of the secondary coil of the con- 55 legheny and Stateof Pennsylvania, have inverter 5 is grounded, as indicated at g, whilevented or discovered certain new and useful the other pole is connectedby a wire to Improvements in ElectricSwitch and Signal one pole of along pull-magnet 10 or other suit- Apparatus, of which improvement thefollowable electrically-controlled mechanism for oping is aspecification. crating the signal 11, the other pole of the re Theinvention described herein relates to magnet 10 being grounded, as at g.The circertain improvements in switch and signal cuit 10 is formed inpart by the armature 12 apparatus for railways, and has for its objectof the magnet 13, and so long as the magnet the operation and control ofthe several parts is excited, holding the armature 12 against orappliances of a railway switch and signal the contact-point 14, also inthe circuit 10, 6 5 i 5 apparatus and the illumination of the signalssaid circuit will remain closed and hold the by electric currents from adynamo-electric signal 11 at safety position. The poles of machinelocated at some central point or stathe magnet 13 are connected by wires15 to tion. the rails of one of the insulated sections into In generalterms the invention consists in which the main track is divided, and theop- 20 the combination and arrangement substanposite ends of thetrack-section are connected tially as hereinafter described andparticuby wires 16 to the secondary coil of the conlarly claimed. verter5 The accompanying drawing, forming a part In order to save wire, theconverters 5 may of this specification, is a diagrammatic view bearranged at those ends of the track-section 7 5 2 5 illustrating myinvention as applied to the op at which the signal controlling saidsection eration of signals, chargingtrack-circuits, and and the relayscontrolling the signal are 10- the illumination of signal and otherlamps. cated--as, for example, the signal and light In the practice ofmy invention a dynainocircuits of track-section B take their currentelectric machine 1 is located at any suitable from the converters at theentrance end of the 0 pointalong the line of track to be operated,section, while the current for the track-cirsaid track being dividedinto sections A, B, cuit is taken from the converter 5 at the en- O, andD of suitable length and insulated trance end of the track-section O, asshown from each other in any suitable manner. The in the figure.dynamo-electric machine is construct-ed and It is preferred to employtwo main conduc- 8 5 a 5 operated to generate a current of such avoltors extending from one pole of the dynamo tags as practice has shownto effect the most and to place a switch 20 in that conductor toeconomical transmission of the current to diswhich one pole of theprimary coil of the lighttant points, and the main conductors 2, 3, andconverter 5 is connected, as by opening and l are arranged alongside ofthe track, preferclosing the switch all the lights operated by 4o ablyunderground. the dynamo can be put out or lighted simul- At eachsection, preferably at or near the taneouslywithout aifecting the othercircuits, entrance end thereof, I arrange three conwhich are connectedwith the other main converters 5, 5, and 5. The converter 51s condoctors2 and 3. nected by wire 6 to the main conductors 2 and "When it isdesired to operate a distant sig- 9 5 5 4, while the converters 5 and 5are connected nal in connection with a home signal, the by wires 7 and'7 to the main conductors 2 former is located at or near the entrance ofa and 3. In the circuit formed by the wires 8, section, but iscontrolled by a branch of the extending from the secondary coil ofconsignal-circuit of the succeeding sectionas, verter 5, one or morelamps 9 of the are or for example, the distant signals 17 shown at I0050 incandescent type, as desired, are included, the entrances to thesections B and O are conthe primary and secondary coils of the controlled by branch circuits 18 from the signalcircuits of sections 0 andD. In order to prevent confusion, circuit-breakers 19 are placed in thebranch signal-circuits and are adapted to be operated by the homesignals of tracksections preceding those Whose condition is indicated bythe distant signal. These circuitbreakers are so arranged as to beoperated by said home signal when shifted to danger position to breakthe branch signal-circuits and thereby set the distant signals todanger.

I claim herein as my invention-- In a railway signaling system, thecombination of a centrally-located electric generator constructed togenerate currents of suiiicient potential to operate the most distantcircuit of the system, a main conductor connected to one pole ofgenerator, two main conductors connected to the other pole of thegenerator, a

switch arranged in one of the two conductors \Vitnesses:

R. H. WHITTLESEY, DARWIN S. WoLcoT'r.

